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Updated: Jul 4, 2025

An Ultrasonic Tool for Nerve Conduction Block in Diabetic Rat Models
Published on: October 20, 2017
The Duration and Intensity of High Frequency Alternating Current Influences the Degree and Recovery of Nerve
Objective:
The purpose of this paper is to investigate the persistence of nerve blockade beyond the duration of applying high frequency alternating current (HFAC) to thinly myelinated and non-myelinated fibers, also termed a "carry-over effect".
Methods:
In this study, we used electrically-evoked compound action potentials from isolated rat vagus nerves to assess the influence of 5 kHz HFAC amplitude and duration on the degree of the carry-over effect. Current amplitudes from 1-10 mA and 5 kHz durations from 10-120 seconds were tested.
Results:
By testing 20 different combinations of 5 kHz amplitude and duration, we found a significant interaction between 5 kHz amplitude and duration on influencing the carry-over effect.
Conclusion:
The degree of carry-over effect was dependent on 5 kHz amplitude, as well as duration.
Significance:
Utilizing the carry-over effect may be useful in designing energy efficient nerve blocking algorithms for the treatment of diseases influenced by nerve activity.
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